the whole story is very interesting and the actors should be perfect except that their role is supposed to be staying there for few years and they are struggling with their English dialogs, only Tim or the character of Ning whose role is new in US but his English dialogs are far better than the others who stayed in the US, the way he speaks as if he made a lot of effort for his role. Many Asians actors have roles that they stayed in the US for more than 2 years and studying there. I hope that they practice more with their dialogs if they are speaking on other language. Not only about Chinese that I am commenting but more Korean drama that I also encountered this problem.